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diff --git a/Zotlabs/Module/README.md b/Zotlabs/Module/README.md new file mode 100644 index 000000000..3b870dd7b --- /dev/null +++ b/Zotlabs/Module/README.md @@ -0,0 +1,80 @@ +Zotlabs/Module +============== + + +This directory contains controller modules for handling web requests. The +lowercase class name indicates the head of the URL path which this module +handles. There are other methods of attaching (routing) URL paths to +controllers, but this is the primary method used in this project. + +Module controllers MUST reside in this directory and namespace to be +autoloaded (unless other specific routing methods are employed). They +typically use and extend the class definition in Zotlabs/Web/Controller +as a template. + +Template: + + <?php + + namespace Zotlabs\Web; + + + class Controller { + + function init() {} + function post() {} + function get() {} + + } + + +Typical Module declaration for the '/foo' URL route: + + + <?php + namespace Zotlabs\Module; + + class Foo extends \Zotlabs\Web\Controller { + + function init() { + // init() handler goes here + } + + function post() { + // post handler goes here + } + + function get() { + return 'Hello world.' . EOL; + } + + } + +This model provides callbacks for public functions named init(), post(), +and get(). init() is always called. post() is called if $_POST variables +are present, and get() is called if none of the prior functions terminated +the handler. The get() method typically retuns a string which represents +the contents of the content region of the resulting page. Modules which emit +json, xml or other machine-readable formats typically emit their contents +inside the init() function and call 'killme()' to terminate the Module. + +Modules are passed the URL path as argc,argv arguments. For a path such as + + https://mysite.something/foo/bar/baz + +The app will typically invoke the Module class 'Foo' and pass it + + $x = argc(); // $x = 3 + + $x = argv(0); // $x = 'foo' + $x = argv(1); // $x = 'bar' + $x = argv(2); // $x = 'baz' + +These are handled in a similar fashion to their counterparts in the Unix shell +or C/C++ languages. Do not confuse the argc(),argv() functions with the +global variables $argc,$argv which are passed to command line programs. These +are handled separately by command line and Zotlabs/Daemon class functions. + + + +
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